HRESULT FFmpegInteropMSS::ParseOptions()

in FFmpegInterop/Source/FFmpegInteropMSS.cpp [659:693]

• 26 lines of code
• 4 McCabe index (conditional complexity)

HRESULT FFmpegInteropMSS::ParseOptions(PropertySet^ ffmpegOptions)
{
	HRESULT hr = S_OK;

	// Convert FFmpeg options given in PropertySet to AVDictionary. List of options can be found in https://www.ffmpeg.org/ffmpeg-protocols.html
	if (ffmpegOptions != nullptr)
	{
		auto options = ffmpegOptions->First();

		while (options->HasCurrent)
		{
			String^ key = options->Current->Key;
			std::wstring keyW(key->Begin());
			std::string keyA(keyW.begin(), keyW.end());
			const char* keyChar = keyA.c_str();

			// Convert value from Object^ to const char*. avformat_open_input will internally convert value from const char* to the correct type
			String^ value = options->Current->Value->ToString();
			std::wstring valueW(value->Begin());
			std::string valueA(valueW.begin(), valueW.end());
			const char* valueChar = valueA.c_str();

			// Add key and value pair entry
			if (av_dict_set(&avDict, keyChar, valueChar, 0) < 0)
			{
				hr = E_INVALIDARG;
				break;
			}

			options->MoveNext();
		}
	}

	return hr;
}